Demographics of Williamstown town, Massachusetts
Williamstown town, Massachusetts had 9,186 people on July 1, 2025, by the Census Bureau’s estimate: +467 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.
Williamstown town, in four figures
- 9,186
- Population
- July 1, 2025, Vintage 2025 estimate. The survey’s 2020–2024 figure is 9,150 ±37.
- +5.4%
- Change since July 2020
- +467 people.
- 37.5 ±6.9
- Median age
- ACS 2020–2024.
- $106,650 ±$25,244
- Median household income
- ACS 2020–2024, in 2024 dollars.
Population, year by year
July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a town, so the change is the difference between one July estimate and the next.
Williamstown town, Massachusetts's population grew 5.4% from July 2020 to July 2025, against +3.1% nationally
The July 1 estimate of Williamstown town, Massachusetts's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
Source: The Census Bureau
About this chart
The figures
| July 1 | Population | Index | United States |
|---|---|---|---|
| 2020 | 8,719 | 100.0 | 100.0 |
| 2021 | 9,305 | 106.7 | 100.2 |
| 2022 | 9,293 | 106.6 | 100.7 |
| 2023 | 9,213 | 105.7 | 101.6 |
| 2024 | 9,227 | 105.8 | 102.5 |
| 2025 | 9,186 | 105.4 | 103.1 |
| July 1 | Population | Change |
|---|---|---|
| 2020 | 8,719 | — |
| 2021 | 9,305 | +586 |
| 2022 | 9,293 | −12 |
| 2023 | 9,213 | −80 |
| 2024 | 9,227 | +14 |
| 2025 | 9,186 | −41 |
Age, 2020–2024
The median age is 37.5 ±6.9: for men 37.7 ±7.6 and for women 37.2 ±10.1. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).
2 more columns on a wider screen
| Age | People | Share |
|---|---|---|
| Under 5 | 307 ±126 | 3.4% ±1.4 |
| 5 to 17 | 1,113 ±280 | 12.2% ±3.1 |
| 18 to 24 | 2,543 ±348 | 27.8% ±3.8 |
| 25 to 44 | 1,207 ±227 | 13.2% ±2.5 |
| 45 to 64 | 1,771 ±277 | 19.4% ±3.0 |
| 65 and over | 2,209 ±296 | 24.1% ±3.2 |
Income and poverty, 2020–2024
Median household income is $106,650 ±$25,244, and income per person $53,332 ±$9,589, in 2024 dollars. The median is $103,960 ±$527 in Massachusetts and $80,734 ±$166 in the United States.
Households by income
2 more columns on a wider screen
| Household income | Households | Share |
|---|---|---|
| Under $25,000 | 440 ±144 | 13.6% ±4.4 |
| $25,000 to $49,999 | 386 ±134 | 12.0% ±4.1 |
| $50,000 to $74,999 | 391 ±129 | 12.1% ±3.9 |
| $75,000 to $99,999 | 377 ±121 | 11.7% ±3.7 |
| $100,000 to $149,999 | 521 ±147 | 16.1% ±4.4 |
| $150,000 to $199,999 | 345 ±136 | 10.7% ±4.1 |
| $200,000 or more | 769 ±189 | 23.8% ±5.6 |
Poverty by age
The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).
2 more columns on a wider screen
| Age | Below poverty | Rate |
|---|---|---|
| All ages | 770 ±280 | 11.2% ±4.1 |
| Under 18 | 40 to 182 | 3.4% to 13.5% |
| 18 to 59 | 229 to 747 | 8.1% to 25.1% |
| 60 and over | 84 to 258 | 6.6% ±3.2 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Housing, 2020–2024
1 more column on a wider screen
| Measure | Williamstown town | Massachusetts |
|---|---|---|
| Housing units | 3,739 ±284 | 3,030,406 ±453 |
| Occupied | 86.4% ±9.0 | 91.9% ±0.2 |
| Vacant | 13.6% ±3.9 | 8.1% ±0.2 |
| Owner occupied | 73.8% ±5.3 | 62.5% ±0.3 |
| Renter occupied | 26.2% ±6.4 | 37.5% ±0.2 |
| Median home value | $437,100 ±$38,707 | $562,100 ±$2,169 |
| Median gross rent | $1,584 ±$292 | $1,762 ±$9 |
| Median year built | 1959 ±5 | 1964 ±1 |
Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.
Origin and place of birth, 2020–2024
Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.
Hispanic origin and race
2 more columns on a wider screen
| Origin | People | Share |
|---|---|---|
| Hispanic or Latino | 477 ±169 | 5.2% ±1.8 |
| White alone, not Hispanic | 7,318 ±334 | 80.0% ±3.6 |
| Black alone, not Hispanic | 153 to 471 | 1.7% to 5.1% |
| Asian alone, not Hispanic | 574 ±212 | 6.3% ±2.3 |
| American Indian and Alaska Native alone, not Hispanic | 0 to 19 | 0% to 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0 to 19 | 0% to 0.2% |
| Some other race alone, not Hispanic | 27 to 133 | 0.3% to 1.5% |
| Two or more races, not Hispanic | 389 ±191 | 4.3% ±2.1 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Place of birth and citizenship
“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).
2 more columns on a wider screen
| Born | People | Share |
|---|---|---|
| Born in the state | 3,191 ±380 | 34.9% ±4.2 |
| Born in another state | 5,033 ±426 | 55.0% ±4.7 |
| Born a citizen outside the states | 48 to 252 | 0.5% to 2.8% |
| Born abroad | 776 ±185 | 8.5% ±2.0 |
| Naturalized citizens | 319 ±137 | 3.5% ±1.5 |
| Not citizens | 457 ±170 | 5.0% ±1.9 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Williamstown town among the places and towns of Massachusetts
200th of 291 places and towns of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Massachusetts page.
| Place | ACS 2020–2024 |
|---|---|
| Freetown town | 9,285 ±27 |
| Salisbury town | 9,281 ±18 |
| Blackstone town | 9,255 ±21 |
| Southwick town | 9,217 ±33 |
| Douglas town | 9,207 ±19 |
| Williamstown town | 9,150 ±37 |
| Townsend town | 9,100 ±19 |
| Millis town | 8,888 ±24 |
| Athol CDP | 8,801 ±568 |
| Ayer town | 8,645 ±27 |
| Lancaster town | 8,606 ±19 |
Rankings this appears in
- No. 10 Places in Massachusetts by poverty rate
- No. 49 Places in Massachusetts by Hispanic or Latino share
- No. 51 Places in Massachusetts by median age
- No. 58 Places in Massachusetts by median household income
- No. 58 Places in Massachusetts by median rent
- No. 81 Places in Massachusetts by per capita income
Sources
- Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
- American Community Survey 5-year estimates — table-based Summary File · U.S. Government work
Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built
Data retrieved